Type-writing machine.



No. 634,988. Patented Oct. l7, I899.

0. F. MAYER.

TYPE WRITING MACHINE.

(Application filed May 24, 1898.) (No Model.)

2 Sheats$haet l,

m: nu'nms Farms ca. PHOTOLIIY'HO" WASHINGTON. o. c.

No. 634,988. Patented Oct. 17, I899.

o. F. MAYER. TYPE WRITING MACHINE.

(Application filed May 24, 1898.)

2 Sheets-Sheet 2 (No Model.)

n4: uonms PETERS co. FNOYO-UTML. WAKNINGTON. n. c.

NITE STATES PATENT Prion,

OTTO FERDINANDIHAYER, OF BERLIN, GERMANY.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 634,988, dated October 1'7, 1899. Application filed May 24, 1898. Serial No. 681,640. (No model.)

i To ttZZ whom it may concern-.-

vented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

This invention refers to type-writing machines of the kind in which the types are located upon a rotary type-wheel; and my invention relates to certain arrangements and combinations of parts by means of which the movements of the keys are transmitted to the type-wheel, so as to properly adj net the latter.

In order to make my invention more clear, I refer to the accompanying two sheets of drawings,in which similar letters denote similar parts throughout the several views, and in which-- Figure 1 is a plan of the machine, some of the keys and the rear parts of the machine being broken away. Fig. 2 is a section in line co m of Fig. 1, and Fig. .3 is a section in line y y of Fig. l and drawn on a slightlylarger scale.

The keys to are secured to double-armed levers Z), arranged upon a common axle c. The rear end of each lever is bent in such a mannor as to form a kind of arather long U, (see cl, Figs. 1 and 2,) having a curved middle part and two short horizontal end parts, one of which connects the U or the part d with the respective key-lever Z). All these horizontal Us open either to the right or to the left or partly to the rightand partly to the left, (see Fig. 1,) and all the curved middle parts of them or the parts at take over an axle or shaft f, having secured to it as many wedge-like disks or frames Z as there are levers bin the machine. In view of the somewhat fork-like configuration of the parts d aforedescrihedl will call these parts forks in the further course of this specification. The positions of said frames 6 upon the shaft f are different, as are also the positions of the forks d with regard to said frames, the. arrangement being such that the shaft f is turned in one or the other direction when one of said frames is acted on by the respective fork, the angle of movement of said shaft being, however, in any case a diderent and distinct one. The type-wheel tis located above the shaft f. The axle of the type-wheel is provided with a bevel-wheel 72;, which gears with a bevel-wheel or beveled sector g, secured to the shaftf. Each rotation or part of a rotation of the latter results, therefore, in a corresponding movement or rotation of the type-wheel 2', and as the angle of rotation is a special or distinct one in any single case or with regard to any single key, respectively, the type-wheel is adjusted to print the desired letter when the key bearing that letter is depressed.

A rod 7t, located in the front part of the machine, extends along immediately below all the key-levers and is connected by links Z with the axle o of said levers. The middle part of said rod is connected by a link in with a rod n, extending through the base of the machine,

to the rear of the latter, and being connected at the point 0 to the shorter arm of a doublearmed lever p, forming at its longer arm a hammer r.

q is the fulcrum of the hammerdeverp 0'. The latter is actuated when any of the keys a is depressed, and the paper is thereby struck against the type-wheel, so that the respective type is imprinted upon the same. The hammen then returns to its former or original position in consequence of its own weight, and in doing so it tends to raise the respective key, which is also raised by the greater weight of the rear arm of its respective lever. Of course the ascension of the keys and the return movement of the other parts may be effected or facilitated by springs; but it is just an advantage in myimproved machine that I may dispense with the use of such auxiliary means and may thus not only simplify the construction, but also facilitate the practical use of the machine, as the operator need neither overcome the increasing tension of springs nor regulate or change such ones.

The types may be arranged upon the typewheel t in two or more series or circles located in known manner one over the other. To raise the type-Wheel, together withits axle, or along upon the same, so as to bring another series of typesin proper position with regard to the hammer r, I make use of two levers u, (if the types form three series,)having each a key If and beinglocated upon the axle c. This arrangement, however, is known, and I do not lay a claim thereon, as is also the case with the means for transporting the paperroller for the purpose of effecting the spacing and with the means for inking the types. Owing to all these mechanisms being known, I have dispensed with fully representing and describing the same.

c is the key for effecting the spacing. This key may well be replaced bya ledge extending in known manner along the front side of the machine, and the two keys 23 may well be located at the sides of the machine instead of in the middle part of the same.

A particular feature of my invention resides in the fact that the type-Wheel does not return to an original or normal position after each actuation, but remains after an'adjustment in that respective position until another key is depressed. This is an important point, as the power to be applied in operating the machine is also hereby remarkably reduced.

In the whole, my improved machine combines facility of operation with simplicity of construction. The adjustment of the types occurs easily and securely, and the price of manufacture is a very moderate one.

Having now described my invention, what I desire to secure by Letters Patent of the United States is- In a type-writing machine having a rotary type-Wheel that remains at rest after each actuation, the combination with said typewheel, a horizontal rocking shaft, and means for transmitting the oscillatory movements of said shaft to the type-wheel, of wedge-like parts 6 secured in different positions to said shaft and having their broader parts located above their smaller ones; fork-like parts cl taking laterally below the broader parts of said wedges, so as to lie between these parts and the shaft, levers I; having said forks attached to them, and keys attached to the other ends of said levers, for the purpose as described.

In witness whereof I have hereunto signed my name, this 12th day of May, 1898, in the presenoeof two subscribing witnesses.

OTTO FERDINAND MAYER.

Witnesses:

G. H. DAY, HENRY I-IAsPER. 

